| Counties, states, countries, continents, or oceans | |
| Sabana Grande | municipio |
| Puerto Rico | territory |
| U.S. possessions and associated areas | |
| North America | continent |
| Land | continent |
| Watershed boundaries (USGS hydrologic units) | |
| Unit | Lithology | Description |
|---|---|---|
| Mariquita Chert | Chert | Laminated, fine-grained, dark-gray chert. Contains abundant to sparse radiolaria, and locally, Foraminifera. Locally interbedded with recrystallized and largely silicified limestone(?), and with non-metamorphosed pillowed basalt. Maximum estimated thickness, 300 m. Exposed in the Cabo Rojo, Puerto Real, San German, Parguera, and Punta Verraco quadrangles |
| Serpentinite | Serpentinite | Sheared light- to dark-green, serpentinite; chiefly altered harzburgite. Epiclastic serpentinite is poorly sorted, unsheared, and retains a characteristic epiclastic appearance in both clasts and matrix. Exposed in the Mayaguez, Rosario, Maricao, Sabana Grande, Yauco, Punta Verraco, Parguera, Cabo Rojo, San German, and Puerto Real quadrangles |
| Two pyroxene olivine basalt | Basalt | Porphyritic augite hypersthene-olivine basalt. Exposed in the Yauco, Sabana Grande, Guanica, Parguera, San German, Cabo Rojo, Mayaguez, Rosario, and Maricao quadrangles |
| ID | Data type | Description |
|---|---|---|
| San German | M-Dz | San German 563 line km with spacing 0.40 km over parts of PR |
| Site name | Development | Commodities |
|---|---|---|
| Maricao East | Prospect | CR CO FE NI |
| Maricao East and Las Tetas De Cerro Gordo East | Occurrence | NI FE CO CR |
| Deposit name | Deposit type | Location |
|---|---|---|
| Maricao East and Las Tetas De Cerro Gordo East | Occurrence | Puerto Rico, United States |
| Maricao East | Occurrence |
| Tract name | Deposit type | Geology |
|---|---|---|
| Santiago | porphyry copper | Cretaceous-Eocene oceanic arc associated with subduction along the northern Caribbean Plate boundary, corresponding to the modern Greater Antilles Arc |